Shingle-finishing machine



Oct. l5, 1929'. R, A, CLARK' 1,731,452

SHINGLE FINISHING MACHINE Filed Dec:v 27, 1927 ZSheetS-Sheet l 0ct. l5,1929. R. A. CLARK SHINGLE FINISHING MACHINE Filed Dec. 27, 192'? 2sheets-sheet 2 il llll] Afforney vatented` Oct. 15, 1929 PATENT OFFICE vROY vA. CLARK, yOF VANCOUVER, BRITISH COLUMBIA, CANADA SHINGLE-FINISHINGMACHINE Application led December 27, 1927. Serial N'o. 242,821.

This invention relates to a methodA of smoothing or dressing the sidesor flat surfaces of wooden shingles, and also the butts or thick endedges of saine, in order to produce a smooth and finished surface forpainting or decorative pattern purposes. This is effected by a mechanismwhich carries the shingles in a direction transverse or perpendicular tothe grain of the wood against rotating cutters,

these latter being set in their correct relative position to produce asmooth and uniformly shaped or tapered section without any tendency tosplit or break the shingles during the operation. l

These objects are attained by the mechanism illustrated in theaccompanying drawl ings, of which: A

Fig. 1 is a side view with the shingle depositing belt, bearings androllers removed, 2U in order to show the feed roll driving mechanisin.

Fig. 2 is a sectional plan t/aken on the line 7 7 in Fig. 1 and thussupposing the top plate, top bearings and 'top belt drive re- -moved, inorder to show the relative position of the pick-up roller, feed rollsand cutters, and the pads or supports for the shingles While passingthrough or against the cutters. Fig. 3 is a sectional end view taken onthe line 8-8 in Fig. 1 showing the vertical and tilted rolls and themethod of varying` the speed of the chain feed. v Fig. 4 shows anenlarged View of the chain, indicating onev of the pawls or speciallyvshaped projecting links which engage with the edges of the shingles andcarry them l towards the picksup rolls. Y

Fig. 5 is an enlarged view of the top belt drive by Which the pick-uprolls are driven from the chain shaft at the same peripheral speed asthe chain.

Fig. 6 is an enlarged view of the shingle depositing mechanism showingthe method of delivery of the shingles by belt to the moving Vchain andthe engagement of the projections on the chains with the nearest layerof shingles. Similar numerals refer to similar parts throughout theseveral views.

Referring to the drawings The shingles are deposited upon a moving bandor belt 9 running upon rollers, and are placed upright thereon with thebutts down and the flat sides perpendicular to the direction of motionof the belt. The belt is wide enough to take the width of an ordinarybundle of shingles, the shingles in each bundle having been previouslyseparated from each other, and all the butts turned to the same end ofthe bundle.

The shingles are then placed upon the belt in layers the width of theoriginal bundle, the firstA layer being laid, or carried by the belt, upagainst the stop bars 10, the lowerl one of which is close to the belt 9and forms a shelf upon which the shingles are carried by the belt. Thesestop bars keep the shingle ,from Contact withthe plain portion ofthemoving chains 11 and they remain stationaryV upon. 70 the shelf untilpicked `up by the projecting pawls 12 on the chains andthus carriedtowardthe pick-up rolls 13 and 14.

The function of the pick-up rolls 13 is to carry the shingle forward tothe feed rolls 1b and 16. vThe pick-up rolls 13 are shown driven by abelt or band 17 from the chain shaft 18. The pick-up rolls 14 aremounted in sliding bearings 19 controlled by springs by which the rollsare pressed up against the shingles passing through, but can give oradjust themselves toshin `les ofvaryingthickness, and keep the shingdesin contact with'the rolls 13.

The feed rolls 15 are geared together to run at the same peripheralspeed, and are driven by the shafts 2() and 21 and suitable gearing fromthe belt speed cone 22. "The feed rolls 16 are also mounted in slidingbearings 19 by which they can adjust themselves to shingles of varyingthickness, and press them up against the feed rolls 15, the function ofwhich is tov carry the vshingles forward betweenthe vertical pads 23 and24 to the side cutters 25 and 26 which dress the sides of each shingleas it passes through, the butts being, dressed by the butt cutter 27underneath during the passage of the shingles. The vertical pad23extendsthe full height; of the shingle and :supports it against theaction of the vcutter 26, the :shingle being steadied by the pressure ofthe vertical spring pad 24. When passing the cutter 25 the shingle issimilarly steadied by the pad 28, .and passing by the roll 29 isdischarged at the end of the machine finished.

In order to provide for the fact that the layer of shingles in the widthof the bundle may vary and be made up of several narrow shingles, andthat consequently there may be a variable proportion of the width takenup by gaps or distances between the edges of contiguous shingles, thespeed of the chain drive is made easily variable by means of thefriction wheels 30 and 31 by which the motion is transmitted to thechain shaft 18 from the belt speed cone 22.

The variation is efi'ected by means of the I lever 32 and thus thetransverse shingle speed can be increased so that the shingles can catchup to those passing through the feed rolls l5 and 1G to the side cutters25 and 26. The shingle being actually dressed by the side cutters ispushed through by the shingle behind driven forward by the feed rollsl5. The belt drive 17 is shown enlarged in Fig. 5 and is so proportionedthat the peripheral speed of the chain 11 and the pick-up rolls 13 isthe saine, and both speeds are varied together by the friction drive30-31.

The feed rolls 15 are gear driven independently of this friction driveand rotate at a constant speed except as varied by changing .the beltupon the speed cone pulley 22.

The side cutters 25 and 26 and the buttV cutter 27 are drivenindependently by belts or other suitable means.

In order to prevent the shingles from befing carried forward in bunchesto the roller '13 a fixed stop 33 1s `provided at a distance "trcinthechain ll great enough to allow one shingle only when in contact with thechain drive to pass under it and thus prevent the overlying shinglesfrom being also swept off the belt 9 by friction from the shingles incontact with the pawls 12 on the chain il as they travel toward theroller 13.

I-Iaving new fully described my invention, what I claim and desire to beprotected in by Letters Patent, is:

l. In a shingle iinishing machine the combination with rotary cutterscarried by a framework and revolvable by suitable gearing andcharacterized by substantially ver* tical spindles carrying saidcutters, a belt adapted to support and traverse a series of shinglesbutts downward on said belt, rightangular supporting means on saidframe,I work whereby said shingles are presented in true alignment withsaid cutters, a driving chain with spaced apart projecting tabs, thesaid tabs being adapted to. engage the edge of some of said shingleswhereby. the motion of said chain is imparted to said shingles.

2. In a shingle finishing machine the combination comprising, aframework or housing, rotary cutters on substantially. vertical spindlessupported in said housing, a movable table for stacking and deliveringshingles to the machine and comprising a broad substantially horizontalbut inclined belt, pulleys supporting and propelling said belt,right-angular supporting means ony l said framework whereby shinglesstacked vertically butts downwards with their sides adjacent and theiredges adjacent on said belt'may be correctly aligned for traverse andpresentation to said cutters, Va vertical shaft carrying sprocketwheels, driving chains engaging said wheels,l projecting members atspaced intervals on said chains and adapted to engage the edge of someof said shingles whereby a number of said shingles are traversed in thedirection of said cutters, guiding and engaging meansadapted to receivesaid shingles in their traverse to said cutters, means whereby the speedof said guiding and engaging means may be varied to take up andaccommodate itself to a varying amount of space separating the saidshingles in their traverse from said belt, means for driving saidcutters independently of said machine and means for driving saidmachine.

In 'testimony whereof I affix my signature.

ROY A. CLARK. Y

1,731,452 f. Y A

